ABB Relion 670 series - Page 239

ANSI11000217-1-en.vsd
AND
AND
AND
AND
AND
AND
PHG_FLT
OR
Release
OR
OR
OR
OR
PU_A
PU_B
PU_C
PHPH_FLT
PICKUP
OR
PU_AG
PU_BG
PU_CG
PU_AB
PU_BC
PU_CA
ANSI11000217 V1 EN-US
Figure 108: Composition of pickup signals
Tripping conditions for the distance protection zone one are symbolically presented in figure 109.
ANSI11000218-2-en.vsd
OR
BLKTRIP
AND
AND
AND
PU_A
PU_B
PU_C
TRIP
TR_A
TR_B
TR_C
AND
Timer tPP=On
PHPH_FLT
AND
Timer tPG=On
PHG_FLT
AND
15 ms
0
0
0-tPP
0
0-tPG
ANSI11000218 V2 EN-US
Figure 109: Tripping logic for the distance protection zone
1MRK 502 066-UUS B Section 7
Impedance protection
233
Technical manual